US2837984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limestone type tennis court
Assignee: Individual
•
Filing: 1956-01-09
•
Granted: 1958-06-10
•
Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Donald D Klotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US188645A
Cited
US358288A
Cited
GB321244A
Cited
US1958850A
Cited
GB392026A
Cited
US2067356A
Cited
US2445717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |